Measured
A deterministic check run over a real artefact. Re-running it on the same artefact returns the same answer.
Can evidence
- That a specific artefact does or does not contain a specific thing, on a stated date.
- Counts and rates over the artefacts actually checked (n is the artefacts, not the market).
- Change over time, where the same check ran on the same artefacts at two dates.
Cannot evidence
- Why anything is the way it is.
- What anybody thinks, wants, or would do.
- Anything about artefacts that were not checked — including the rest of the market.